1997-2006 Porsche 911/Boxster/Carrera GT/Cayenne Knock Sensor 0261231120
OEM Part #: 0261231120
Porsche Part #: 996-606-125-00 (99660612500)
Actual photo
The exact part you’ll receive — not a stock photo.
$49.99
Used
Donor2004 Porsche CAYENNE · 4.5L
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4 Available — Select Your Part:
Genuine OEM Used
SKU: 639923
Donor Vehicle: 2004 Porsche CAYENNE · 4.5L
2 photos
$49.99
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Genuine OEM Used
SKU: 374207
Donor Vehicle: 1998 Porsche BOXSTER · 2.5L
2 photos
$49.99
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Genuine OEM Used
SKU: 471627
Donor Vehicle: 1999 Porsche BOXSTER · 2.5L
2 photos
$49.99
30-Day Returns
Genuine OEM Used
SKU: 471626
Donor Vehicle: 1999 Porsche BOXSTER · 2.5L
2 photos
$49.99
30-Day Returns
- Genuine OEM — real photos
- 30-day returns on eligible parts
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Used Porsche knock sensor, OEM part number 0261231120 (also listed as 99660612500), replaces 99660612100. This genuine used sensor detects engine detonation or pre-ignition, sending a signal to the ECU to adjust timing and prevent damage. A failing knock sensor can cause a check engine light, reduced power, or pinging under load.
Specifications
| Fits Vehicle Model | 911, Boxster, Carrera GT, Cayenne |
| Fits Vehicle Make | Porsche |
| OEM Part No | 0261231120 |
| Porsche Part No | 996-606-125-00 (99660612500) |
| Compatible OEM Part No | 996-606-121-00 |
| Category | Sensors |
Compatible Vehicles
Fits 76 vehicle configurations across 1 make, 1997-2006.
Check your specific vehicle before ordering.
This list shows year, make, and model. Some years have multiple trims or
engines that use different parts, and individual listings may have
additional fitment notes (e.g. “with sunroof only”). Review
the full variant list below, or
message us with your VIN
and we’ll confirm the match.
View all 76 vehicle configurations
| Year | Make | Model | Trim | Engine | Note |
|---|---|---|---|---|---|
| 2002 | Porsche | 911 | Carrera 4S Coupe | 3.6L | |
| 2004 | Porsche | 911 | GT2 Coupe | 3.6L Turbo | |
| 2000 | Porsche | 911 | Carrera 4 Convertible | 3.4L | |
| 2001 | Porsche | 911 | Carrera 4 Convertible | 3.4L | |
| 2000 | Porsche | 911 | Carrera 4 Coupe | 3.4L | |
| 2005 | Porsche | 911 | GT2 Coupe | 3.6L Turbo | |
| 1999 | Porsche | 911 | Carrera Coupe | 3.4L | |
| 2004 | Porsche | 911 | Turbo Convertible | 3.6L Turbo | |
| 2004 | Porsche | 911 | Turbo Coupe | 3.6L Turbo | |
| 2004 | Porsche | 911 | Carrera Convertible | 3.6L | |
| 1999 | Porsche | 911 | Carrera 4 Coupe | 3.4L | |
| 2003 | Porsche | 911 | Carrera Convertible | 3.6L | |
| 2005 | Porsche | 911 | Turbo Coupe | 3.6L Turbo | |
| 2005 | Porsche | 911 | Turbo S Coupe | 3.6L Turbo | |
| 2005 | Porsche | 911 | Carrera 4S Coupe | 3.6L | |
| 2003 | Porsche | 911 | Carrera Coupe | 3.6L | |
| 2005 | Porsche | 911 | Carrera 4S Convertible | 3.6L | |
| 2004 | Porsche | 911 | Carrera 4S Coupe | 3.6L | |
| 2004 | Porsche | 911 | Carrera 4 Convertible | 3.6L | |
| 2002 | Porsche | 911 | Carrera 4 Convertible | 3.6L | |
| 2005 | Porsche | 911 | Turbo S Convertible | 3.6L Turbo | |
| 2004 | Porsche | 911 | Coupe | 3.6L | |
| 1999 | Porsche | 911 | Carrera 4 Convertible | 3.4L | |
| 1999 | Porsche | 911 | Carrera Convertible | 3.4L | |
| 2001 | Porsche | 911 | Carrera 4 Coupe | 3.4L | |
| 2005 | Porsche | 911 | GT3 Coupe | 3.6L | |
| 2003 | Porsche | 911 | GT2 Coupe | 3.6L Turbo | |
| 2002 | Porsche | 911 | GT2 Coupe | 3.6L Turbo | |
| 1999 | Porsche | Boxster | Convertible | 2.5L | |
| 1998 | Porsche | 911 | Targa | 3.6L | |
| 2002 | Porsche | 911 | Targa | 3.6L | |
| 2001 | Porsche | 911 | Carrera Convertible | 3.4L | |
| 2001 | Porsche | 911 | Carrera Coupe | 3.4L | |
| 2000 | Porsche | 911 | Carrera Convertible | 3.4L | |
| 2000 | Porsche | 911 | Carrera Coupe | 3.4L | |
| 2004 | Porsche | 911 | Carrera Coupe | 3.6L | |
| 2004 | Porsche | Cayenne | Turbo SUV | 4.5L V8 Turbo | |
| 2006 | Porsche | Cayenne | Turbo SUV | 4.5L V8 Turbo | |
| 2005 | Porsche | Cayenne | Turbo SUV | 4.5L V8 Turbo | |
| 2004 | Porsche | Cayenne | S SUV | 4.5L V8 | |
| 2006 | Porsche | Cayenne | Turbo S SUV | 4.5L V8 Turbo | |
| 2005 | Porsche | Cayenne | S SUV | 4.5L V8 | |
| 2003 | Porsche | Boxster | Roadster Convertible | 2.7L | |
| 1998 | Porsche | 911 | Carrera S Coupe | 3.6L | |
| 1998 | Porsche | Boxster | Convertible | 2.5L | |
| 2002 | Porsche | Boxster | Roadster S Convertible | 3.2L | |
| 2003 | Porsche | Cayenne | Turbo SUV | 4.5L V8 Turbo | |
| 1997 | Porsche | Boxster | Convertible | 2.5L | |
| 1998 | Porsche | 911 | Carrera Convertible | 3.6L | |
| 1998 | Porsche | 911 | Carrera 4 Coupe | 3.6L | |
| 1998 | Porsche | 911 | Carrera 4S Coupe | 3.6L | |
| 2002 | Porsche | Boxster | Roadster Convertible | 2.7L | |
| 2000 | Porsche | Boxster | Roadster S Convertible | 3.2L | |
| 2001 | Porsche | Boxster | Roadster Convertible | 2.7L | |
| 2000 | Porsche | Boxster | Roadster Convertible | 2.7L | |
| 2001 | Porsche | Boxster | Roadster S Convertible | 3.2L | |
| 1998 | Porsche | 911 | Carrera 4 Convertible | 3.6L | |
| 2003 | Porsche | Cayenne | S SUV | 4.5L V8 | |
| 2003 | Porsche | Boxster | Roadster S Convertible | 3.2L | |
| 2004 | Porsche | Carrera GT | Convertible | 5.7L V10 | |
| 2002 | Porsche | 911 | Carrera Coupe | 3.6L | |
| 2004 | Porsche | Boxster | Convertible | 2.7L | |
| 2006 | Porsche | Cayenne | S SUV | 4.5L V8 | |
| 2003 | Porsche | 911 | Carrera 4 Convertible | 3.6L | |
| 2003 | Porsche | 911 | Carrera 4S Coupe | 3.6L | |
| 2005 | Porsche | 911 | Turbo Convertible | 3.6L Turbo | |
| 2004 | Porsche | 911 | GT3 Coupe | 3.6L | |
| 2001 | Porsche | 911 | Turbo Coupe | 3.6L Turbo | |
| 2004 | Porsche | 911 | Carrera 4S Convertible | 3.6L | |
| 2005 | Porsche | 911 | Carrera Convertible | 3.6L | |
| 2005 | Porsche | 911 | Carrera Coupe | 3.6L | |
| 2002 | Porsche | 911 | Carrera Convertible | 3.6L | |
| 2002 | Porsche | 911 | Turbo Coupe | 3.6L Turbo | |
| 2003 | Porsche | 911 | Turbo Coupe | 3.6L Turbo | |
| 2004 | Porsche | Boxster | S Convertible | 3.2L | |
| 2005 | Porsche | Carrera GT | Convertible | 5.7L V10 |